Hoisting mechanism.



T. H. MALM.

HOISTING MECHANISM.

APPLIOATION FILED SEPT. 19,1913.

LILOLMQ. Patented June 30, 1914 Hllllll IIIIIIIIIIIII l TTNTTEE STAT PATENT FFTQE.

TI-IEO H. MALM, OE LOOMIS, NEBRASKA.

I-IOISTING MECHANISM.

Application filed September 19, 1913.

To all whom it may concern Be it known that I, TI-IEO H. MALM, a citizen of the United States, residing at Loomis, in the county of Phelps and State of Nebraska, have invented certain new and useful Improvements in Hoisting Mechanism, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improve ments in hoisting mechanism and has relation more particularly to a device of this character adapted to be employed in connection with sand and gravel or the like especially when confined within a sinking casing or tube and the object of the inventicn is to provide a device of this general character having novel and improved means whereby the material to be hoisted or lifted may be quickly and conveniently engaged and may be dropped or dumped with convenience at any predetermined time.

The invention consists in the details of construction and in the combination and arrangement of the several parts whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will be carefully defined in the appended claim.

In order that my invention may be the more readily understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein,

Figure 1 is a view in side elevation of a hoisting device constructed in accordance with my invention, the parts being shown in position for lifting; Fig. 2 is a view in side elevation of a scoop as herein disclosed but adjusted in position either for dumping or for entering the mass or material to be hoisted.

As shown in the accompanying drawings, 1 denotes a scoop of any ordinary or preferred construction provided with the entering edge 2 adapted to penetrate the mass or material in a conventional manner. The manipulation of the scoop 1 is under control of the endwise movable members 3 and 4:, the member 3 having its lower end portion provided with diverging arms 99 terminating in the straight portions 10 adapted to be pivotally engaged, as at 17, with the Specification of Letters Patent.

Patented June 30, 1214.

Serial No. 790,685.

sides 8 of the scoop 1 and in close proximity to the upper edges thereof and at substantially the longitudinal centers thereof, while the member 4 is provided with similar diverging arms 55 terminating in straight portions 6 adapted to be pivoted as at 7, to the sides 8 of the scoop in close proximity to the back 12 thereof and closely adjacent to the base 14 thereof whereby it will be readily observed that any relative movement of the members 3 and l will result in an adjustment of the scoop 1 from either a horizontal or vertical position. This relative movement of the members 3 and 4-, as herein set forth, is accomplished through the medium of the lever member 15 in pivotal engagement with such members 3 and l adjacent their upper ends, as indicated at 16 and 17, such lever member being extended as at 18, to afford convenient means whereby the device may be manually operated.

In the initial operation of the device or in order that the scoop 1 may properly enter or penetrate the mass or material to be lifted, the scoop l is caused to assume the posi tion shown in Fig. 2, and after such scoop has been forced sufliciently within the mass or material the lever 15 is so operated as to cause the scoop to assume the position shown in Fig. 1 and to maintain such position the hook 19 is caused to engage the latch 20 on the member 3 whereby it will be observed that the stress of the lift will be borne by both the members 3 and 4:, thus resulting in maintaining the scoop l in horizontal position until such time as the hook 19 may be caused to become disengaged from the latch 20 through the medium of the cam trip 21 pivot-ally supported by the member 3 and adapted to so engage the hook 19 as to release the same from the latch 20 when proper movement is given thereto through the medium of the flexible member 22 suitably connected with the projecting finger 23 of the trip 21.

The means whereby the lift of the scoop 1 may be effected forms no part of my present invention as any of the means now employed may be used with convenience for cont-rolling the lifting rope 24: which is secured directly to the member 4. As I have found that the best results are attained by pivotally supporting the hook member 19 on the lifting rope 24, I have found it best that I employ the chain connection 25 as a part of the rope 2& as the links of the chain afford a more convenient means of attachment for the hook member 19.

While the particular purpose of my invention as herein set forth is for the hoisting or lifting of a mass or material such as sand, gravel or the like from a sinking casing or tube, I do not believe it is necessary to dis close my invention in any such specific manner as it will be obvious that the same may be used with advantage under other conditions.

From the foregoing description, it is thought to be obvious that a hoisting mechanism constructed in accordance with my invention is of a simple and comparatively inexpensive nature and is particularly Well adapted for use by reason of the convenience and facility with which it may be manipulated and it is also thought to be obvious that my invention is susceptible of some change without material departure from the principles and scope thereof, and for this reason I do not wish to be understood as limiting myself to the precise formation and arrangement of the several parts herein set forth in carrying out my invention in practice.

Having thus fully described my invention what I desire to claim and secure by Letters Patent is:

A device of the character described comprising a scoop member, elongated members in pivotal engagement wit-h the sides of the scoop member adjacent the forward and rear port10ns thereof, a lever member in pivotal engagement With the elongated members and having an end portion extended to afford an operating means, a hoisting member in connection With one of the elongated members, a hook carried by the hoisting member, a latch carried by the second elongated member and adapted to be engaged by the hook of the hoisting means, and a cam trip pivotally connected to the second elongated member adapted to engage the hook of the hoisting member for releasing such hook from the latch, such cam trip being provided with means whereby the same may be moved around its pivot.

In testimony whereof I hereunto aflix my signature in the presence of two Witnesses.

THEO H. MALM.

Witnesses:

J. WV. RADOLIFF, WM. 1. MCKEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,v

Washington, D. 0.? 

